what side x of this square?
 

Asked by abinash.gupta003 | 6th Dec, 2017, 08:02: PM

Expert Answer:

begin mathsize 16px style In space the space given space figure space extend space CF space and space
put space perpendicular space from space straight B space to space this space extended space line
now space increment CXB space is space rt space increment
EF equals BX equals 3
CX equals CF plus FX equals 21
apply space pythagoras space to space find space BC
then space in space square
increment ABC space is space rt increment
by space pythagoras
2 straight x squared equals BC squared
space end style

Answered by Arun | 7th Dec, 2017, 12:13: PM